Back to coil tapping, momentarily

[Roger Jolly]

>Date: Tue, 28 Apr 1998 17:50:31
>To: JIMRPT <JIMRPT@aol.com>
>From: Roger Jolly <baldyam@sk.sympatico.ca>
>Subject: Re:  Re: Back to coil tapping, momentarily
>In-Reply-To: <d2f4b080.354531be@aol.com>
>
>Hi Jim,
>>
>>By this I assume you mean 'completely cover' as the string should cover
aprox.
>>the bottom half of the  becket hole?
>
>Correct assumption.
>
>>[following applies to a single note, say on A4]
>> If 'all' coils are at 1/8th, or 3/16ths, or whatever number, is it possible
>>to have the same angle of bearing on the web bearing bar with the
strings?  I
>>think that if all coils are the same height than the shorter strings (pin to
>>web bearing) will have a less acute angle than would the longest string.
Now
>>if all coils are at 3/16ths all the 'string' levels/angles would be
different,
>>right ?   Conversely if all strings were level all the 'coils' would be at
>>different levels, right?
>>  I agree that the string should leave the pin "squarely" but........we
insist
>>on putting in a 5, or 6, or 7 degree slant to the tuning pins and if the
>>string left the pin "squarely" it would not hit the bearing bar.  If it hits
>>the bearing bar, with the slanted pin position, the string can't leave
the pin
>>"squarely".
>
> I normally stagger the height of the pins so that the strings are at an
even height as they go to the termination bar, makes a significant
difference by evening the friction when you 'back slap' the tuning hammer.
Depending on the pin configuration, the rear row of pins could be at 1/8"
and front row at 3/16".
> Some pianos are all over the map re front to rear angle, as well as left
to right.
> When I replace pin blocks, I use 7 degrees to the rear, but in line with
the direction of the string to the first bearing point, This method I have
found to reduce the number of leaning strings. ( rear strings that touch
the forward coils. ) I have also thought of compounding the angle 2 or 3
degrees to the right, but I've never tried it, in theory it should help to
snug the string under the becket. 
>
> If the becket is at the right, and the rake of the pin is in line with
the direction of the string, it is suprising how square the wire leaves the
pin. I use a pnumatic pin driver and it has a lot of control with regards
to height, and it really prevents you from driving the pin at odd angles.
However I agree with you, that in fact it is not square, but I intended it
to be a relative term. 
>
> Hope this clarifies MY confussion
>Regards Roger
Roger Jolly
Balwin Yamaha Piano Centres.
Saskatoon/Regina.
Canada.